Killer Bees!

The Beebots from the insect civilization of BEM are invading the Earth,
protected by swarms of Killer Bees, and it’s up to a swarm of white bees to
stop them.

The player control the white bees swarm, trying to kill the Beebots by flying
over them and stinging them. The longer the swarm flies over a Beebot, the
slower it moves, until it finally stops and dies. When a Beebot dies, a grave
marker will be raised in its place, making the movement of the remaining
Beebots more difficult. The red Beebots move clockwise, the blue ones move
counterclockwise.

The Beebots are protected by swarms of Killer Bees. If a swarm of Killer Bees
attacks the player’s swarm, it will lose its bees gradually, until none are
left and the game is over. The longer the Killer Bees stay on screen, the
stronger they get. They’ll change their colors gradually, from green (the less
harmful) to blue and then finally to red (the most dangerous).

The only defense the player has against the Killer Bees is the bug-zapping
RoSHa Ray, released by pressing the action button. It is recharged each time a
Beebot is killed, and it follows the white bees swarm vertical movement. Once
all Beebots are killed, the round ends, and a new one starts with a new level
of difficulty. There are 26 difficulty levels.

The player scores one point per sting, ten points per zapped swarm and 100
points per Beebot killed. At the end of each round, a bonus is also given,
consisting in ten points per each survivor bee, multiplied by the number of
the round.